Sucking and swallowing are automatic reflexes at birth, but they come under voluntary control by how many weeks of age?
a. 2 c. 6
b. 4 d. 8
C
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A Incorrect. Sucking and swallowing do not come under voluntary control by 2 weeks of age.
B Incorrect. Sucking and swallowing do not come under voluntary control by 4 weeks of age.
C Correct. Sucking and swallowing are automatic reflexes at birth, but they come under voluntary control by 6 weeks of age as the nerves and muscles develop.
D Incorrect. Sucking and swallowing do not come under voluntary control by 8 weeks of age.
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